Air conditioner



FIG. 1 is a front perspective view of an air conditioner showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a side view thereof;

FIG. 5 is another side view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a front perspective view thereof as shown in another configuration.

The broken lines are for environmental purposes only and form no part of the claimed design. 

CLAIM We claim, the ornamental design for an air conditioner, as shown and described. 